GE Vivid 7 Service Manual
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GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 5 5-2-7 Block Diagram - Units with Fr ont-End Card Cage, version 2 (FEP2) NOTE: In this block diagram, the BEP2.2 is illustrated. Figure 5-3 Vivid 7 Simple Block Diagram - Units with Front-End Card Cage, version 2 (FEP2) FRONT END PROCESSOR PROBES XDBUS DOPPLER ATX POWER SUPPLY UPS AC POWER OP I/O PANEL17 Monitor USER INTERFACE SONY COLOR PRINTERUP-2900MDPC2IO PCVIC PC MOTHERBOARD POWER ON/OFF (RESET*) Ethernet PC2IP AGP VIDEO EXTERNAL I/O AC CONTROLLER XFMR BOX TO MONITOR TO PC TO PERIPHERIALS TO CARD RACK 230Vac230Vac 115Vac 115 or 230Vac 230Vac 115Vac BACK END PROCESSOR ECG Patient Interface 5.25 MOD CD-ROM Hard Drive SONY VCRSVO-9500MD SONY B/W PRINTERUP-890MD TO OUTLET INTERNAL I/O PCI CABLE Video Outputs Network Conne ction USB Connectio n FRONT END BACKPLANE RLYRXRFITXBF64 BF64
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 6 Section 5-3 - a Front-End Processor (FEP) Section 5-3a Front-End Processor (FEP) 5-3-1 General Description The electronics in the Front-End Card Cage is also called the Front-End Processor (FEP). Two versions of the Front-End Card Cage are in use; • Version 1 (FEP1) was used from introduction of Vivid 7 until 2nd half of 2003 • Version 2 (FEP2) was introduced 2nd half of 2003 5-3-2 FEP1 FEP1 has eight different types of electronics cards, totally 10 cards. The cards are listed in Ta b l e 5 - 2. NOTICEBe careful so you don’t insert a card in the wrong position in the card rack. If the power is turned on with a card placed in the wrong position, the Vivid 7 will be destroyed. Table 5-2 Front-End Processor Cards used in FEP1 SHORT NAME COMPLETE NAMECOMMENT RLY RELAY BOARD TX TRANSMITTER BOARD RX RECEIVER BOARD BFBEAM FORMER BOARD2X USED PER UNIT FECFRONT-END CONTROLLER BOARD RFTRADIO FREQUENCY & TISSUE BOARD SDPSPECTRUM DOPPLER PROCESSOR BOARD IMP IMAGE PORT SOMETIMES CALLED “IMPORT” XDBUS TRANSDUCER BUS BOARD 2X USED PER UNIT
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 7 5-3-3 FEP2 • In units with FEP2, a new card, the Radio Frequency Interface (RFI) card replaces four of the cards used in FEP1. The cards used for FEP2 units are listed in Table 5-3 Front-End Processor Cards used in FEP2 on page 5-7 . Table 5-3 Front-End Processor Cards used in FEP2 SHORT NAME COMPLETE NAMECOMMENT RLY RELAY BOARD TX TRANSMITTER BOARD 2X TO BE USED PER UNIT FOR 3D OPTION ( ONLY, NOT FOR PRO)) RX RECEIVER BOARD BFBEAM FORMER BOARD2X USED PER UNIT RFIRADIO FREQUENCY INTERFACE BOARD XDBUSTRANSDUCER BUS BOARD2X USED PER UNIT
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 8 Section 5-3 - a Front-End Processor (FEP) 5-3-4 FEP’s Location in the Unit 5-3-5 Input Signals • RX signals from probes • Physio (ECG/Phono) 5-3-6 Bidirectional Signals PC2IP bus to BEP 5-3-7 Output Signals • TX signals to probe • Doppler and Color Flow Data to Back-End Processor for digital signal processing • Digital Video Data to Back-End Processor 5-3-8 Fuses, Jumpers, Dip-switches and LEDs See descriptions for each card.Figure 5-4 Front-End Processor’s Location FRONT-END PROCESSOR / FRONT-END CARD CAGE
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 9 5-3-9 Transmitter and Receiver Subsystem 5-3-9-1 Transmitter Signal Path - Units With One TX Board • The Front-End Controller board (FEP1) or the Radio Frequency Interface board (FEP2) loads scan parameters via the FE_BUS into local RAM on the TX board and on the BF boards. The scan parameters includes probe dependant st eering and focusing delay for a certain scan pattern. Thus, when the Front-End Controller bo ard (FEP1) or Radio Frequency Interface board (FEP2) goes through a scan sequence, it loads the proper contents of the RAM into the Transmitter Pulse Generator (TPG), then issues a transmit tr igger pulse (TXTRIG_L) for the transmitter and a receive synchronization pulse (SYNC_L) for the Beam Formers. By firing the transmit pulses from the different elem ents at certain repeated time intervals and with different delays, the ultrasound beam can be steere d in desired directions to obtain the selected scan patterns (e.g. 2D, 2D Flow etc.). • The ultrasound transmit bursts are generated on th e TX board, initiated by the transmit trigger pulse (TXTRIG_L). The transmit trigger starts the Transmit Pulse Generators (TPG) on the TX board, each generating 16 transmit pulses with different delays. The transmit pulses are then routed to separate transmit “amplifiers ” fed with voltage HV1 and HV2. The voltages HV1 and HV2 are controlled by the Acoustic Power Control software. • The transmit pulses are routed over the Transduc er Bus Board (XDBUS) located on the front side of the TX and RX boards, to the Relay board, where they are fed to the selected probe. Figure 5-5 The Ultrasound Transmitter with one TX board RELAY BOARD RX128 TX128 FRONT-END CONTROLLER (UNITS WITH FEP1) RFI BOARD (UNITS WITH FEP2) PROBES DOPPLER PROBE DIGITIZED RECEIVED ULTRASOUND SIGNALS TO: - RFT BOARD (UNITS WITH FEP1) - RFI BOARD (UNITS WITH FEP2) XD_BUS BF64 FE_BUS T/R
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 10 Section 5-3 - a Front-End Processor (FEP) 5-3-9-2 Transmitter Signal Path - Units With Two TX Board • The Radio Frequency Interface board (RFI) loads scan parameters via the FE_BUS into local RAM on the TX boards and on the BF boards. The scan parameters includes probe dependant st eering and focusing delay for a certain scan pattern. Thus, when the Radio Frequency Interfac e board goes through a scan sequence, it loads the proper contents of the RAM in to the Transmitter Pulse Generator (TPG), then issues a transmit trigger pulse (TXTRIG_L) for the transmitter and a receive synchronization pulse (SYNC_L) for the Beam Formers. By firing the transmit pulses from the different elem ents at certain repeated time intervals and with different delays, the ultrasound beam can be steere d in desired directions to obtain the selected scan patterns (e.g. 2D, 2D Flow etc.). • The ultrasound transmit bursts are generated on the TX boards, initiated by the transmit trigger pulse (TXTRIG_L). The transmit trigger starts the Transmit Pulse Generators (TPG) on the TX boards, each generating 16 transmit pulses wit h different delays. The transmit pulses are then routed to separate transmit “a mplifiers” fed with voltage HV1 and HV2. The voltages HV1 and HV2 are controlled by the Acoustic Power Control software. • The transmit pulses are routed over the Transducer Bus Board (XDBUS), located on the front side of the TX and RX boards, to the Relay board, where they are fed to the selected probe. Figure 5-6 The Ultrasound Transmitter with two TX boards RELAY BOARD RX128 RFI BOARD PROBES DOPPLER PROBE DIGITIZED RECEIVED ULTRASOUND SIGNALS TO: - RFI BOARD XD_BUS BF64 FE_BUS T/R TX128TX128
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 11 5-3-9 Transmitter and R eceiver Subsystem (cont’d) 5-3-9-3 Phased, Linear and Convex Array Probes • The Phased, Linear and Convex array probes consis t of several identical transducer elements (e.g. 64, 128, 192). • Three probes can be connected to the system at the same time. The probe connectors are physically located on the Relay Board, where on e of them is selected and connected to the transmitter (TX board) and receiver (RX board) through a number of relays. •See Probes on page 9-80 for a list of available probes. 5-3-9-4 Receiver Signal Path • The reflected signal from body structures and bl ood cells are routed from the probe, via the Relay board over the Transducer Bus to the RX (recei ver) board, where pre amplification (20dB) and Analog Time Gain Compensation (ATGC) (-10 - + 30 dB) is performed. Gain is determined by an analog signal (ATGC) generated by the Fron t-End Controller board (FEP1) or by the Radio Frequency Interface board (FEP2). • On the very input of the RX board are transmit/rec eive (T/R) switches to prevent the transmitters from destroying the receivers. • The output channels from the RX board are fed to the Beam Former boards. Each Beam Former board performs A/D conver sion of 64 channels. Figure 5-7 The Ultrasound Receiver RELAY BOARD RX128 TX128 FRONT-END CONTROLLER (UNITS WITH FEP1) RFI BOARD (UNITS WITH FEP2 PROBES DOPPLER PROBE DIGITIZED RECEIVED ULTRASOUND SIGNALS TO: - RFT BOARD (UNITS WITH FEP1) - RFI BOARD (UNITS WITH FEP2) XD_BUS BF64 FE_BUS T/R
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 12 Section 5-3 - a Front-End Processor (FEP) 5-3-9-5 Signal Control • The Front-End Controller (FEC) board (FEP1) or the Radio Frequency Interface (RFI) board (FEP2) controls the transmitter and receiver boards. FE C/RFI loads all parameters to the TX and Beam Former RAMs, it reads the probe identification, selects probe connector on Relay board and controls the high voltage multiple xer in linear and convex probes. In addition the FEC/RFI generates: - the transmit trigger pulse for TX - a receive synchronization pulse (SYNC_L) used by Beam Formers and RF & Tissue Processor - a differential ATGC voltage used by RX - global 40 MHz system clocks and reset pulse (SRES). Figure 5-8 The Ultrasound Transmitter and Receiver Control Signals RELAY BOARD RX128 TX128 FRONT-END CONTROLLER (Units with FEP1) RFI BOARD (Units with FEP2 PROBES DOPPLER PROBE DIGITIZED RECEIVED ULTRASOUND SIGNALS TO: - RFT BOARD (UNITS WITH FEP1) - RFI BOARD (UNITS WITH FEP2) XD_BUS BF64 FE_BUS T/R
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 13 5-3-9-6 Signal Path Out from the Beam Former Boards • The output from the BF#2’s Beamadders is fed to the RF and Tissue Processor board (RFT) on units with Front-End version 1, and to the Radio Frequency Interface (RFI) board on units with Front-End version 2. Figure 5-9 Receiver Signal Path RFT - Radio Frequency & Tissue SDP - Spectral Doppler IMP - Image Port Motherboard connector to Internal I/O module VME-bus Doppler Audio S-Video/CVideo replay (from VCR) To/From FEC Digitized received ultrasound signals from Beam Former To Back-End Processor PC2IP bus (Digital Video Data) PipeLink PipeLink BF64
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 14 Section 5-3 - a Front-End Processor (FEP) 5-3-10 Transmitter Board, TX128- 5 (version introduced for BT’05) 5-3-10-1 General Description The Transmitter board (TX128) contains 128 individually controlled transmit channels and provides transmit pulses via the XDBUS board to the Relay boa rd and then to the transducer array (the probes). Frequency-, delay- and pulswidth parameters for the TX128 board are received on the FE_BUS from the Radio Frequency Interface (RFI). The parameters are decoded and stored in the cache. A pulse, TX_TRIG_L, trigs the Tran smit Pulse Generators. The transmit pulses are then amplified to the correct level in the 128 TX transmitters. High Voltage 1 and High Voltage 2 from the TX Power supplies the TX Transmitters with the needed voltages to generate the correct power. The VDRIVER voltage is used by the TX Dr ivers (drivers for the TX transmitters). Two TX128 boards are used on units with the 3D option. Figure 5-10 Block Diagram for the TX128 board 8 TRANSMIT (128 CH.) TX 128 TRANSMITTERS CACHE FRONT END INTERFACE PULSE GEN. FROM TX POWER HV1&2 TX_TRIG_L FROM RFI FE_BUS XD1-128 TO RLY VIA XDBUS HV1P HV2P HV2N HV1N VDRIVER FROM DC POWER FROM RFI